A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat in still water and stream is

1:3

3 :1

2 : 3

3 : 4

3 : 1

Let speed downstream = x kmph Then Speed upstream = 2x kmph So ratio will be, => (2x+x)/2 : (2x-x)/2 => 3x/2 : x/2 => 3 :1

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